Will Rackley has gone through a career’s worth of highs and lows in his first two years as a pro.

Though he was an unheralded third-round pick out of Lehigh in 2011 and didn’t have an advantage of an offseason program because of the lockout, he started 14 games at left guard in his rookie year on a line that helped Maurice Jones-Drew win the rushing title.

Rackley was looking to build on that last year when he suffered an ankle injury on the fourth day of training camp. He tried to come back and play a few weeks later, but he couldn’t go, had surgery in late August and missed the entire season.

Sitting out was a difficult experience.

“I was watching my guys from the stands, and it was terrible,” Rackley said. “At a certain point, you have to accept it. I learned how much I appreciate the game and love the game. When you’re not playing, you realize how much you miss it.”

Now he’s ready to shake off the rust and start over.

Rackley was back working with the first unit at the three-day veteran minicamp this week, and coach Gus Bradley gave him good reviews after camp ended.

“He’s done a really good job,” Bradley said.

If Rackley can win the job, he will give the Jaguars some continuity at left guard, where he will have a chance at anchoring the left side of the line between left tackle Eugene Monroe and center Brad Meester.

And once Uche Nwaneri comes back from his knee injury at right guard, the Jaguars would seem to be set in the line except for right tackle.

When Rackley was out last year, the Jaguars used a revolving door at left guard with Eben Britton, Herb Taylor, Mike Brewster and Austin Pasztor all getting starts.

The result: The Jaguars didn’t have much continuity in line play last year.

Although Monroe said a player can learn from working with different players, he said there is an advantage to working together with the same group. “You build that relationship, and you build that non-verbal communication, and that’s how you really grow,” Monroe said.

Meester said Rackley looked good in minicamp.

“I thought he did a great job out there after being out an entire season,’’ Meester said. “It’s hard being out an entire season, and you’re a little rusty, and you have to get used to everything. He stepped back in like he played an entire season last year.”

Rackley said he likes the new coaching staff, including new offensive line coach George Yarno, who replaced Andy Heck, who is now in Kansas City.

“I love it,” Rackley said. “It’s exciting. There’s never a dull moment. It’s awesome. He’s an in-your- face-type on the field and makes you want to be in the offensive line room.”

Rackley hopes to win the starting job for the second time in three years but is taking nothing for granted. That’s a good attitude because Yarno, a former NFL player, said there are currently no starters.

“He’s a little rusty, and I don’t think he’s quite 100 percent yet. He’s obviously a very intelligent player. He has good internal toughness. I like the things I saw out there. I’m excited to get to work with him further,” Yarno said.

Of choosing starters, he said, “We’re going to have an open competition. We don’t have a starting left guard. We don’t have a starting anything.”

The other guards in camp include Brewster, who also plays center; Drew Nowak, a converted defensive lineman; veteran Jason Spitz, who missed the camp with an injury; and Pasztor.

Bradley said of Rackley: “He’s got a really good opportunity in front of him. There’s some things that he’s working on like flexibility and things like that. George is working with him, and I know he likes him.”